The Smartwool PhD® Outdoor Light Mini men's sock is an ankle-high powerhouse made for mileage. This sock combines support, stretch, and recovery. It features Indestructawool™ technology for ultimate durability and the 4 Degree™ elite fit system provides a dialed fit. The light cushioning offers impact protection, while the Virtually Seamless™ toe offers more comfort. The sock is made using imported yarns featuring 58% Merino Wool, 40% Nylon, and 2% Elastane. All Smartwool socks are proudly made in the USA, and carry a lifetime guarantee.